A sudden "Red Fog Catastrophe" caused modern civilization to collapse. The leakage of abnormal energy has spawned mutated organisms, and extreme weather has swept the world. Humanity has been reduced to the bottom of the food chain, lingering in the ruins. Lin Wan died in the fire that destroyed the safe zone. When he opened his eyes again, he returned to three months before the disaster. In her previous life, she was cowardly and incompetent. She witnessed the tragic death of her relatives and the betrayal of her companions, and finally died in despair. After resurrecting her life, she lost her cowardice and relied on her past life memories to secretly hoard supplies, exercise, and study the basic uses of supernatural energy. She wants to protect the people she cares about, avoid the fatal traps of her past life, and find a way out in this catastrophe where science fiction and the apocalypse intertwine. Faced with the coming red mist, ferocious mutants and unpredictable human hearts, Lin Wan took every step of the way, hoping to bring his family and trustworthy people to find another glimmer of life and morning light in a world filled with ashes.